(x+y)(x-y)-(x-y)²的计算过程?
1个回答
=x²-y²-(x²-2xy+y²)
=x²-y²-x²+2xy-y²
=2xy-2y²
=2y(x-y)
相关问题
5x(x-y)-2y(x+y)计算过程
(x+y)(x-y)-(2x+y)(x-y+1)计算要过程
用行列式性质计算(需过程):(x,y,x+y; y,x+y,x; x+y,x,y )
2(x+y)平方+(x+y)(x-y)-6(x-y)平方的计算过程及结果
计算: [(2x-y)(2x+y)+y(y+6x)]/2x 要详细过程
计算x^2/y-y^2/x-x^3+y^3/xy过程
(3x+y)(x-2y)计算要过程
计算:(x+y/x-y)÷(xy+x^2) (要有过程)
计算:(x²+y²)(x²-y²)-x²(x+y)(x-y)
以下是一道计算题,要求有过程?x+y=98 x-y:2=y-x